Clamp for a machine for forming paper containers



Aug. 25, 1931. P. ToscANo I 1,820,102

CLAMP FOR A MACHINE FOR FORMING PAPER CONTAINERS Filed Jan. 9, 1930 2 Sheets-Sheet 1 INVENTOR. BY $0M PM A TTORNE Y.

Aug. 25, 1931, L. P. TbSCANQ 1,820,102

CLAMP FOR A MACHINE FOR FORMING PAPER CONTAINERS Filed Jan. 9, 1930 2 Sheets-Sheet 2 I Z'mnentot (Ittorneg V 40 container on the mandrel.

Patented Aug. 25, 1931 UNITED STATES PATENT OFFICE.

LOUIS r. 'roscnuo, or UrrcA, NEW YORK, nssrenoa r FONDA/ CONTAINER COMPANY, rim, or UTICA, NEW YORK, A CORPORATION or NEW YORK CLAMP FOR A MACHINE FOR FORMING PAPER CONTAINERS Application filed January 9, 1930. Serial No. 419,655.

My invention relates to a clamp for a machine for forming paper containers, and I declare the following to be a full, clear, concise and exact description thereof sufiicient to enable anyone skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings in which like reference characters refer tolike parts throughout the specification.

The object of the invention is to provide a clamp that will hold the paper container securely from turning with respect to the mandrel on which it is mounted, while said mandrel is under the die of the machine for forming paper containers, whereby to allow for crimping or curling the cap portion of the container to the cylindrical or lateral wall. Furthermore the clamp is designed to allow for the unobstructed mounting and removal of the container on the mandrel which carries the container to the die. To this end the clamp is provided with a metallic strap or ring which is actuated towards and from the annular surface of the mandrel in a concentric manner, whereby to maintain a constant relation thereto throughout its entire circumference at all times. Such a concentric movement of the ring will allow 7 for the unobstructed placing of the container on the mandrel and the removal therefrom without any portion of the ring interfering therewith. Heretofore in machines of this character the ring has not been held concentrically with the surface of the mandrel but has because of uneven strain thereon touched the mandrel at certain locations in its circumference. This defect has interfered with the proper placing of the Furthermore it oftentimes prevents the air pressure used in blowing the container off the mandrel to overcome the point of contact of the holding ring whereby the container fails to be 5 removed. Moreover the clamp is designed to allow for a predetermined amount of adjustment to accommodate containers varying in diameter.

The object will be understood by referring 59 to the drawings in which s Fig. 1 is a plan view of certain correlated parts of a machinefor forming paper 0011- tainers with one of the clamps shown in its relative position with said machine.

1 Fig. 2 is a detail perspective View of the clamp. I I

Fig. 3 is a perspective View of a paper container.

Fig. 4 is an elevational View of a machine for forming paper containers showing at.- tached thereto a novel means for pushing the finished containers into a chute. Referring more particularly to the drawings, the intermittent rotary table of a ma chine for forming paper containers is represented at 1 and mounted to-turn therewith the clamping plate holder 2. Mandrels 3 .are attached to move with table 1 and are adapted for mounting the cylindrical portions 1 of paper containers 5. As mandrels .3. pass the location of-the mandrel at 10 it is important that portion 4 of the container the held rigidly to said mandrel. To this end has been devised the clamp having. "a metallic band or strap 11 which is intended to quite encircle inv aconcentric manner "the cylindrical portion 4 of the paper c'ontainer 5. Said strap or ring 11 is attached at one end to a rock arm l2 that is pivoted at 1-3 to clamping plate holder 2. The opposite end of strap or ring 11 is fastened by screw bolts 14, 14, to block 15. I Block15 isin turn pivoted to lever 16- at'17. Forthis purpose,

the rear side of block 15 is provided 'witlr an open recess 20 adapted for the reception of the end of lever 16. 1

Lever 16 is fulcrumed at 21 upon a'pivot upstanding from clamping plate holder 2. The free end of lever 16 holds an antifricface of stationary cam'30, whereby to rock lever 17 upon its fulcrum' 21, when said roller25 passes over the projecting part 31 of cam 30. l

An adjustable link 35' is pivoted at one tion roller 25. Roller 25 rides over the sur- I .7

The operation of the clamp is effected by adjusting link 35 to such a degree as will allow for sufficient space between metal strap 11 and mandrel 3 to slip the cylindrical portion 4 of the container 5 over the mandrel 3. As'table 1 carries the container on mandrel '3 towards location 10, lever 16 will be rocked upon its fulcrum 21 by reason of roller 25 coming in contact with the projecting part 31 of stationary cam 30. The rocking of lever 16 will cause one end thereof to move block carrying one end of metal strap'll and the other end of lever 16 to exert a pull on the free "end of rock arm 12 carrying the other end of metal ring 11, whereby ring 11 will approach the annular surface of mandrel 3 in a concentric manner to grip and hold paper container 5 firmly thereto. When the mandrel 3 has reached the location at 40, roller will have passed beyond the projecting part 31. of cam 30, whereby lever 16 will be permitted to return to original position, and strap or ring 11 will be loosened concentrically about portion t'otf container 5 to allow container 5 to beb'lown off mandrel 3 by the proper mechanism .not shown.

Although only one such'clamp is shown it will be understood that a similar clamp is used in connection with each mandrel 3.

In Fig. 4 I have shown a device ,for pushing the containers into an exit chute after completion. The device consists of arotary signature.

ters" Patent is as follows:

1. In a clamp for a machine for forming paper COIIt'ELLDGIS, aring forsurroundmg a paper container, a member connected wlth one end ofsaid ring, a lever connected with the other end of said ring, a link connected with said :member and with said lever and means for actuating said first .named member and lever, whereby to move said ring 'in aconcentric manner, to hold the said paper container in predetermined position.

.2. In a clamp for amachine for forming paper containers, a ring for surrounding a paper container, a member connected with one end of said :ring, .a lever connected with the other end of said ring, a link connected with said member and with saidlever and cam means for actuating said first named member and lever, whereby to move said ring in a concentric manner, to hold the said paper vcontainer in given position.

In testimony whereof I have affixed my LOUIS P. TOSCANO.

member mounted to turn upon a stud 5.1 I which is supported in a bearing 52 having a tight fit in bracket 53. Member 50 has projecting from its lateral surface two arms 54 and 55 whichare attached to traverse in .the turning of member 50 the field occupied by'the completed container 56, whereby to push said container 1 away from its loca- 'tion directly above mandrel 3 where it has been elevated by the .air pressure from below, into a chute not shown. The member 50 is rotated by a sprocket and chain connection with a shaft 61. 'To this end rotary member 50 hasa tight fit with a hub 62 i which also turns on stud 51. A sprocket wheel is formed on the upper edge o-f'hub :62. Said sprocket wheel is connected by sprocket chain 63 with a sprocket wheel h 1 formed on a like hub 64: that is fixed to turn with shaft '61. Shaft 61 has a be'aringat upper end at 65 in bracket53 and at its lower end in journal 66. It carries miter gear 67 which is :fixed to rotate with shaft 61. Miter gear 67 is in mesh with :a like miter gear 68dis posed at right angles thereto and mounted to rotate with horizontal shaft 69 carrying also to rotate therewith a worm gear 70 that meshes with worm 71 mounted on master shaft 72. A pulley 73 is fixed to turn with master shaft -72-and is 

